When Gary Nash saw the home address on his grandparents' marriage certificate it made the hair on the back of his neck stand on end.
It was exactly the same as his own - 8 King's Gardens, Hove.
It also got him thinking. What if they had spent their honeymoon in the very rooms he was living in?
Gary said: "We knew they had wed just after the First World War when my grandfather was on leave but we hadn't realised where they lived.
"When I looked at the marriage certificate the address just leapt out at me. It really was one of those Twilight Zone sort of moments when the hair bristles on the back of your neck."
Gary, who comes from Luton, has only been living at the address for the past couple of months and said neither of his grandparents, Emma Urry or Richard Jurd, came from Hove either.
He puts it down to some bizarre twist of fate which has drawn them to the one house.
"For me it was the fact that there is a quick Thameslink train up to London to get to university. For my grandmother it was a job as a housemaid.
"I suspect my grandfather only put that address on the marriage certificate because he was on leave and had nowhere else to put."
Today 8 King's Gardens has been made into flats but back in 1919 when his grandmother worked there it was one house.
In the early 20th Century it was famous for being the residence of the Sassoon family and King Edward VII stayed at the house in 1907, 1908 and 1910.
Gary said: "The flat I live in was where the servants had their rooms so my grandmother could have lived in my very room.
"It is a real possibility she at least walked through them and it is even possible my grandparents spent their honeymoon here."
The coincidence only came to light a couple of weeks ago after Gary's mother Beryl, Emma and Richard's daughter, came to stay.
Gary said: "I'd had the certificate and other documents about the family's history for a few years but had put it to one side while I did my degree.
"The day after she went home I dug out a copy of the marriage certificate and that's when the address jumped out at me.
"I phoned her straight away and she was gobsmacked at the coincidence."
Gary said he was keen to know more about his grandparents' early married life as little seemed to be known within the family.
One good source of information will be the census for 1921.
But Gary said: "Unfortunately that won't be available for another ten years."
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